Stock-Based Compensation (Details 1) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Summarized information about stock options outstanding
Number of options, Options outstanding Beginning Balance	1,025,000
Number of options, Options granted	656,000	0
Number of options, Options exercised	(296,000)
Number of options, Options forfeited	(248,000)
Number of options, Options expired	(70,000)
Number of options, Options outstanding Ending Balance	1,067,000	1,025,000
Weighted average exercise price, Options outstanding Beginning Balance	$ 9.75
Weighted average exercise price, Options granted	$ 10.79
Weighted average exercise price, Options exercised	$ 9.00
Weighted average exercise price, Options forfeited	$ 11.43
Weighted average exercise price, Options expired	$ 9.95
Weighted average exercise price, Options outstanding Ending Balance	$ 10.19	$ 9.75

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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-Name Accounting Standards Codification

-Topic 718

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Number of share options (or share units) exercised during the current period.

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